The HST scheduling team will likely make their final decision early on September 26, so your observations are essential NOW.

Observations are even more important than they would usually be at this point in the timeline because recent observations of BB Ari - which are somewhat conflicting - indicate that THE SYSTEM MAY BE BEGINNING A NORMAL OUTBURST. If the outburst really is occurring the HST observations would have to be cancelled, so knowing for certain is absolutely essential. BB Ari had a superoutburst in August.

Please monitor BB Ari through September 28. AAVSO observations show BB Ari can be as faint as magnitude 19.898 V at minimum and may be as bright as 13.576 V at maximum.